Using the inner query to filter outer query

Question

hi
i've tried finding an old post on this, but there's nothing quite what im looking for. I have an inner query which gets sales totals, and an outer query with an outer join to return all the weeks (even when there are no sales):-
select wk.week_id,sum(sales_total)
from (select week, sum(sales) sales_total from tbl_sales_A
where week between 0801 and 0807
group by week
UNION ALL
select week, sum(sales) sales_total from tbl_sales_B
where week between 0801 and 0807
group by week)
, tbl_weeks wk
WHERE
wk.week_id=week(+)
AND wk.week_id BETWEEN 0801 AND 0807
GROUP BY wk.week_id
this gives me the following results:-
week_id sales
0801 0
0802 0
0803 55
0804 66
0805 96
0806 0
0807 97
I would like my query to only return results from the first week sales are made i.e. 0803. The results would like this:-
0803 55
0804 66
0805 96
0806 0
0807 97
How do i write my query so that it does this???
Many thanks for your time.
Message was edited by:
user645692

Answer 1

On a test data:
SQL> with test_data as (
  2    select 0801 as week_id, 0 as sales_total from dual union all
  3    select 0802, 0  from dual union all
  4    select 0803, 55  from dual union all
  5    select 0804, 60 from dual union all
  6    select 0804, 6  from dual union all
  7    select 0805, 90  from dual union all
  8    select 0805, 6  from dual union all
  9    select 0806, 0 from dual union all
10    select 0807, 97 from dual
11  )
12  select week_id, sales_week_total
13  from (
14    select wk.week_id,sum(sales_total) as sales_week_total,
15      sum(sum(sales_total)) over (order by wk.week_id rows between unbounded preceding and current row) as sales_so_far
16    from test_data wk
17    GROUP BY wk.week_id
18  )
19  where sales_so_far <> 0
20  ;
   WEEK_ID SALES_WEEK_TOTAL
       803               55
       804               66
       805               96
       806                0
       807               97Regards,
Dima
Message was edited by:
DimaCit